santos



Sept. 7,

- J. L. SANTOS HANDLELLOCK FOR PNEUMATIC TOOLSM.

Original Filed June 4, 1920 GM M engaged with the rotatable ring or theabutment'formed by the notch 21.

In -1 of the drawing the split ring 1s shown with the hook 14 engaged inthe barrel. recess 11 from which point said ring encircles the barrel.

The ring 16, which is shown in Fig. 1 as slipped down upon the barrel ofthe tool, is designed to be moved upwardly thereon to bring the;parts'into their proper relation, and when so moved its recessed upperportion 18 will project over and encircle the split rin ,-therebyconfining said split ring in. 10 annular space or channel 19.

. en moving the annular ring 16 up, the notch'21'in its upper edge isbrought into re 'ster with the out-turned hook 15 of the sp 't ring soas to engage the latter with the annular ring. A

--This. movement of the annular ring 16 will brin the ratchet-teeth 20into engagement wit 'theoorresponding teeth 9 on the handle.

- By then rotating the annular ring 16 in the-direction permitted by theratchet-teeth, onto the right as viewed in Fig. 1, the ringmtch 21,because of its engagement with out-turned hook 15 of the split ring 13,will expand the-latter and place the same under greater tenson durin'gwhich, movement the teeth will simply ride past each other and .inthereverse direction, and this force is therefore so exerted upon the twoparts as to serewflthem together instead of allowing them to unscrew.

The split ring and annular rotatable ring tighten the handle or headanthe barrel.* 1

,fll o prevent accidental displacement of the annular-ring 16.or-itsseparation or dmengagement from? the handle or head, there is 1?prpvided agisplitr spring clip 22 having in tl? ed.edge flanges 23 and24 respectively, w

lch clip is snapped around the tool with its flange 23mg mg the annulargroove 10 gits other flange 24' engagrential shoulder 25 on the oiilarelziglfieo the annular 1ping 16, l:vhereby t I V v, ring wit iteteeten --the gag n is-direeteclto the/tact that the' sgetionaipiewroi Fig. 3does not pretend to l mmaeeurate cross through -the-bar-t ports usuallyemployedin the barrel construction have been omitted, because they haveno bearing on the present invention.

Having described my invention, I claim 1. In a pneumatic tool, thecombination with a barrel; a handle having threaded engagement with thebarrel, said handle likewise having a series of ratchet teeth upon itslowerend; a--1ocking ringencir+ cling the barrel and likewise havingratchet teeth upon one face, adapted to coact with the ratchet teethupon the handle; and a split spring ring, one end engaging a recessformed in the barrel and the other engaging the locking ring afore=said, whereby when the ring is rotated with reference to the handle itwill tend to spread ratchet teeth on the handle preventing retro grademovement of the locking ring with reference to the handle.

2. In a pneumatic tool, the combination with a barrel, of a handlehaving threaded engagement with the barrel, a continuous ring about thebarrel and free to move in a circumferential direction about the barrel,said ring having means'to engage'the handle; and elastic means attachedto the barrel and also connectedto the ring to exert a constant rotatingtendency on the ring in a direction to screw the handle and barreltogether.

v 3. In a pneumatic tool, the combinatio with a barrel, of a handlehaving threaded engagement with the barrel and said handle beingprovided with ratchet-teeth; a rotatable ring encircling the barrel andhaving teeth to engage'th'e teeth on the handle; and means for exertinga constant force on the rotatable ring, which force tends to turn thering in a direction to screw the'handle on the barrel.

4.v In a pneumatic tool, the combination with a barrel, of'a handlehaving threaded engagement with the barrel; a continuous ring about thebarrel andfree to move in a circumferential direction about the barrel,said ring having means to engage the handle; and a split spring-ringencircling the bar I rel with one end attached to:-the latter and itsother end attached to the continuousring,

said. spilt ring byits tendency to contract bar e and its other endengaging said ring,

spring-ring aving one endattae'hed to the 5.3a Vri g being normally andter ising to contract so as to exert on barrel and handle that tends"to-acrevv thetwo together.

6, In a pemunatic. tool, the combination with a barreh a handle havingthreaded enw! t with the'barrel, said handle likevaseriesof ratchetteeth upon lave: ailocking ring encircling the dlikewiee havingrateh'et'teeth u n adapted tocoact with the ra et n the handle; a splitspring ring, e a. formed in the barand the other the locking'ringiforeeaid, whereby w an t e ring is rotated with nferenceto the handle,-it will tend to 1 the spr and act to screw the handle 'upoii th d gai' if, the-ratchet teeth preventing retrograde movement of the lockinglringwith reference to the handle; and a sp 't spring clip havin inturnedflanges, said flanges engaging e handle and the locking ringrespectively.

7. In a pneumatic tool, in combination, a cylinder and a cylinder headin threaded engagement; a ring movable over said cylm er into faceengagement with said head; interlocking means on said ring and head,said ring having a recess; and means in said recess engaging saidcylinder and said ring respectively for rotating said head relative tosaid cylinder to take up looseness of said parts. 7

In testimony whereof I have signed my name to this specification.

JOHN R. L. SANTOS.

